package com.atguigu.lease.web.admin.custom.interceptor;

import com.atguigu.lease.common.context.LoginUser;
import com.atguigu.lease.common.context.LoginUserContext;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;

@Component
public class AuthenticationInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        String token = request.getHeader("access_token");
        if(!StringUtils.hasText(token)){
            throw new LeaseException(ResultCodeEnum.ADMIN_LOGIN_AUTH);
        }

        Claims claims = JwtUtil.parseToken(token);
        Long userId = claims.get("userId", Long.class);
        String username = claims.get("username",String.class);

        LoginUser loginUser = LoginUser.builder().userId(userId).username(username).build();
        LoginUserContext.threadLocal.set(loginUser);

        return true ;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        LoginUserContext.threadLocal.remove();
    }
}
